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GitHub - rdkls/gps-tracker-server
Traccar - the ultimate GPS tracking server for your app | itCraft
Kimai - Free Time-Tracking App (open-source)
GPS Fleet Tracking and Management Solutions | Gurtam
Gps tracking software - free and open source system - traccar
GitHub - nipuna777/Train-Tracker-GPS: A web based GPS-tracker.
Where Is It? - Tracking vehicles with OpenGTS - Linux Magazine